Reinforced-concrete reservoir.



w.l MUESEH.

REINFORCED CONCRETE RESERVOIR.

APPLICATIONl FILEDYAPLZ. 1915.

w. MUESER.

REINFORCED CGNCRETE RESERVOIR. APPLICATION FILED APRLz. 1915,.

1,301,154. Patented Apr. 22, 1919.

3 SHEETS-SHEET 3.

M Inventor Arty lzll STATES F WILLIAM MUESER, OFVNEW YORK, N. Y.

REINFORCED-CON CRETE RESERVOIR.

To all whom 'it may concern u Be it known that I, WILLLAM MUESER, acitizen of the United States, residing at `New York, inthe county ofBronx and State of New York, haveinvented certain new `and usefulImprovements in Reinforced- Concrete Reservoirs, of which the followingis a specication.

This invention relates to tanks or reservoirs adapted to contain waterand made of reinforced concrete. In an application for Letters Patent ofthe United States led by me September 14th, 1911, and recently allowed,I have, described a reinforced concrete tank for this purpose comprisingessentially a bottom, a 'separate wall mounted thereon, and a jointbetween the wall and the bottom whereby movement between them may befaciliated, and the subject-matter of this application may be consideredan improvement on the invention described in that application.

Experience has developed the fact that when a reservoirof this characterhas Vto be built on sandy, gravelly or other soil of an elastic orcompressible nature, or when such soil lacks uniformity over its entiresurface, it will happen that after filling the reservoir to its maximumthe weight of the same, in addition tothe weight of the fluid contents,will cause a settlement of the bottom into the soil, but as soon as thereservoir is emptied only the weight of the wall will press on the outerrim of the bottom. The middle part of the bottom'not being Y 'thus underdownward pressure of the fluid will tend to lift under the iniiuence ofthe elasticity of the soil, while the weight of the wall will keep theouter edge of the bottom down. Under such circumstances certain bendingstresses are developed likely kto crack the bottom, and one object ofthis present invention is to providemeans for lessening this tendency orpreventing 1t.

Inaddition to the means which I de' sulting from the weight of the wallon the bottom when the tank is being filled.

l I have also provided a more eicient means speeication of LettersPatent.

Patented Apr. 22, 1919.

Application filed April 2, 1915.t Serial No. 18,661.

for reinforcing the wall, as will be hereinafter described in detail.

In the drawings, Figure 1 is a front elevation in miniature of a tank orreservoir embodying my invention; Fig. 2 is a vertical section throughthe lower portion of the wall and the corresponding adjacent portions ofthe bottom; Fig. 3 is an elevation detail of one of the wall standardsand two of the reinforcing rings; Fig. 4 is a section of the detailshown in Fig. 3; Fig. 5 is a top plan view of a portion of the bottomwith a portion of its upper surface shown cut away to'disclose thereinforcing members in two planes beneath the same; Fig. 6 is a verticalsection of a portion of Vthe bottom showing the radial reinforcinmembers arranged in groups of three; Fig. is a horizontal section of aportion of the wall showing the manner of supporting the reinforcingrings; Fig. 8 is an elevation of the reinforcing skeleton of the part ofthe lfiat disk having a relatively thin inner section 21 and arelatively thicker outer annular section 22 upon which the wall rests,

an intermediate wedge shaped section 23 joining the inner and outersections and having ya constantly increasing cross-sectional area'fromthe inner section outwardly.

The upper surface of the disk is, in the example illustrated,substantially plane and at its4 outer edge it is provided with anannular recess 24, the bottom 25 of which, upon which the wall rests,slopes downwardly and outwardly to a flange 26 forming a gutter tocollect overflowing water which is carried to thesewer by pipes 27. Adepression 28 in the upper surface ofthe flange serves to carry offwater filling the gutter if the pipes 27 are clogged. ,Water is thuskept away from the foundation of the structure.

The reinforcing members ofthe bottom diskare arranged in two series.VOne comprises a series of radial bars arranged in three lengths, viz.`one length 30 along the upper part of the inner section 21, another`length 31 along the lower 'part of the section 23, and another length32 along the lower part of the section 22. Circular bars 33 are arrangedat intervals transverse to the lengths 32. This series of bars 1sadapted to take care of the bend-ing stresses produced in the bottom andliable to crack the concrete. In Fig. 6 there is shown an arrangement inwhich this series of bars is arranged in groups of three, the middleoblique lengths 31 being arranged at varying distances from the edge ofthe section 23.

The second series of bars consists of a series of two sets 34 and 35arranged at right angles to each other in the upper part of the bottomdisk. They are intended to take care of local stresses and may bearranged in the upper part of the disk, as shown, or in its lower partor in any intermediate plane.

The Wall 40, in the example illustrated, is cylindrical in form. It isobvious that it might be of any form of polyhedron, the

cylinder being the ultimate form. It is of suitable thickness, which mayvary as the exigencies of the situation demand, and it is preferablyprovided With a bottom surface 41 beveled to correspond to the surface25 of the recess 24 in which it rests.

The reinforcement of the Wall follows cer` tain principles. Itisgreatest near the bottom Where the greatest pressure will be eX- ertedagainst it and Will gradually diminish toward the top. The form ofreinforcement which I prefer consists of independent Steel rings 42arranged in parallel horizontal planes. If they are of uniform crosssectional area they should be closer together near the bottom than theyare at the top and they should' be spaced apart With a considerabledegree ofexactitude. If they vary in cross sectional area they might beplaced at equal vertical distances apart. In such case they would have aconstantly diminishing cross sectional area from the bottomlto the topof the Wall. The one construction is the exact mechanical equivalent ofthe other but I prefer to usefthe former because it is easier to procurea large quantity of steel rings of uniform size than a smaller quantity"of many sizes.

The means employedv to space the rings consistsvof a series of uprightstandards 43 arranged' at regular intervals around the wall; Any usualform of beam may be employed, but I prefer two L-beams With one Larranged the reverse of the other so as to formin section a Z likeoutline (-see Figs. 9 and l0). In the flanges of the beams-holesarepunched at the proper places and' the rings 42 held in place by meansof straps 44 secured by bolts 45,' or in any other suitable manner. Ialso prefer to stagger the rings infvertica-l` successionand even nearthe bottom to have an additionalfseries of rings closer to the inside ofthe Wall. Vertical bars 46 are arranged at intervals between thestandards in the usual. manner.

As the stresses in a Wall of this kind are uniform aroundthe entire Wallfor any given height, it is desirable that the steel and concrete shouldeach bear its properA share in taking, care of such stresses. At theplaces where the standards are located one part of the concrete ispractically separated from the adjacent part by the presence of suchstandards and the uniform strength of the Wall is not preserved. Inorder to remedy this and to insure the continuance of such uniformity,extra reinforcement is provided, either in the form of short steel bars47 (as shown in Fig. 9) or in the form ofsheets of expanded metal orWoven Wire 48 .(as shown in Fig. l0).

I claim: p Y

l. In a structure of the character` described, a bottom, a Wall separatetherefrom and adapted to move thereon and0 means for reinforcing theWall consisting of aseries of independent rings unconnected Withthebottom of uniform cross sectional area arranged in successivehorizontal planes, those at the bottom being closer together.

2'. In a structure ofl the character ydescribed, a bottom, aWallsseparate therefrom and adapted to move thereon and meansl forreinforcing the Wall consistingof a series of independent ringsunconnectedlwith the bottom of uniform cross-sectional area arranged insuccessive horizontal planes so thatfthere isa gradually increasing.distance.- between the planesfrom bottom to top".` y

3; In a structure of` the `character described, a bottom, a Wallseparate therefrom and adapted to move thereon and meansforreinforcingVV the Wall consistingy of a series `of independent ringsunconnectedzwith thebottom of Vuniform cross-sectional areaarrangedinsuccessive horizontal: planes and provided with means for spacingthem4 properly apart including. standards arranged verticallyn atintervals.

4. In a structure ofV the character described, a bottom, a Wallseparatetherefrom.

and4 adapted tomove thereon andfmeansfor reinforcing the Wallconsistingof a seriesof independent-rings of uniforml cross-sectional areaarranged .in successive horizontalplanes and provided with meansforspacing them properly apart includingstandards arranged vertically atintervals, in combi-nation With means for reinforcing thef concrete atthe junction of each ringwitha standard.

5. In a structure of the character dey iso them properly apart includingstandards arranged vertically at intervals, in combination with meansfor insuring uniform resistance to stress in the plane of each ring.

6. In a structure of the character' described, a bottom, Ia wallseparate therefrom and adapted to move thereon and means for reinforcingthe wall consisting of a series of independent rings of uniform crosssectional area arranged in successive horizontal planes and providedwith means for spacing them properly apart including standards arrangedvertically at intervals, in combination with means for insuring uniformresistance to stress in the plane of each ring, consisting of asupplemental reinforcing member at the junction of each ring andstandard. v

7. In a structure of the character described, a bottom, a wall separatetherefrom and adapted to move thereon and means for reinforcing the wallconsisting of a series of independent rings of uniform cross sec--tional area unconnected with the bottom are ranged in successivehorizontal planes and provided with means for spacing them properlyapart including standards arranged vertically at intervals, the ringsbeing arranged in two series one on each side of the series ofstandards.

8. In a structure of the character described, a bottom, a wall separatetherefrom and adapted to move thereon and means for reinforcing the wallconsisting of a series of independent rings of uniform cross sectionalarea arranged in successive horizontal planes and provided with meansfor spacing them properly apart including standards arranged verticallyat intervals, the rings being arranged in two series one on each side ofthe series of standards and staggered with respect to each other.

9. A reservoir or the like comprising a bottom having near the outeredge of its upper surface a downwardly and outwardly sloping portion, atubular wall separate from the bottom and adapted to stand thereon andhaving at its bottom a bevel corresponding in obliquity to the slope ofthe surface of the bottom.

10. A reservoir or the like comprising a bottom provided with a beveledannulus near its edge, and a tubular wall having a beveled lower surfaceadapted to stand thereon.

11. A reservoir or the like comprising a bottom provided with an annularcircumferential recess, the bottom of which slopes downwardly andoutwardly, and a tubular wall adapted to rest in the recess and havingits lower surface correspondingly beveled.

12. A reservoir or the like comprising a bottom provided with an annularcircumferential recess, the bottom of which slopes downwardly andoutwardly, and a tubular wall adapted to rest in thc recess and havingits lower surface correspondingly beveled, in combination with aretaining wall beyond the recess.

13. In a structure of the character set forth, a bottom having anupstanding outer marginal portion and a tubular wall supported on thebottom and movable thereon toward and from the upstanding marginalportion during expansion and contraction, and means for draining theopen space between the wall and the upstanding marginal portion.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM MUESER.

Witnesses:

MARY I-I. LEWIS, ALDA L. MILLER.

Copies of this patent may be obtained for ve cents each, by addressingthe "Commissioner of Patents, Washington, D. 0.

